Abstract
The fluorescence of some dielectric crystals doped with Cr3+ ions is studied upon laser excitation in the range of the long wavelength tail of the absorption spectrum (cooling mode). Although no actual optical cooling was observed, spectroscopic results and temperature measurements of the samples indicate that electron-phonon bands of Cr3+ ions are of interest for obtaining laser cooling.
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Funding
The research was carried out with the financial support of the Russian Foundation for Basic Research (RFBR Grant no. 20-52-05002 Arm_a) and the State Committee for Science of the Republic of Armenia (grant 20RF-024).
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Asatryan, G.R., Kulinkin, A.B., Feofilov, S.P. et al. Cr3+-Doped Crystals as Promising Materials for Laser Cooling of Solids. Phys. Solid State 63, 1875–1878 (2021). https://doi.org/10.1134/S1063783421100036
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DOI: https://doi.org/10.1134/S1063783421100036